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Show The Oldest Living Creature. Among the oldest life forms on the globe is the shellfish, known as the lingnla, a specimen of which was taken ta-ken from Manila bay several years ago. The genus, according to scientists, scien-tists, has remained practically unaltered unal-tered for more than a hundred million years. With the extraordinary changes of climate and environment since the world began most forms of life with which science is familiar have been transformed or have altogether disappeared disap-peared since the geologic ages. "That the genus lingula," says the Journal of Heredity, "should have survived for all these ages, and undergone virtually no change, is striking evidence of the fact that the germ plasm, which under some conditions, as in the case of the horse and' the dog, is capable of extraordinary extraordi-nary variation, is under other "conditions "condi-tions remarkably constant." |